Inverse-designed LNOI microring electric field sensor

Tongrunye Yang; Yuhan Zhou Jr.; Zhezheng Wang Jr.; Yan Song; Bao Sun; Yong Liu

doi:10.1117/12.3048138

13 December 2024 Inverse-designed LNOI microring electric field sensor

Tongrunye Yang, Yuhan Zhou Jr., Zhezheng Wang Jr., Yan Song, Bao Sun, Yong Liu

Author Affiliations +

Proceedings Volume 13502, AOPC 2024: AI in Optics and Photonics; 135020X (2024) https://doi.org/10.1117/12.3048138
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

We designed a novel compact micro-ring electric field sensor based on the thin-film lithium niobite on insulator (LNOI) platform. By leveraging the method of inverse design based on topology-optimized algorithm, a remarkable micro-ring detector with a bending radius of 6 μm has been achieved, resulting in an order of magnitude reduction in loss compared to conventional bends. The designed detector achieves an ultra-compact footprint of 13.22 μm × 22 μm with a relatively flat frequency response across the 50 Hz - 1.95 GHz. At the wavelength of 1550.75 nm, the detector achieves an impressive maximum detectable electric field of 4×10^7 V/m, with a minimum detectable electric field value of 4 kV/m when the maintaining a linear dynamic range of 80 dB for the system. The compact size and electrode-free design of the proposed sensor enable seamless integration into chips and wearable devices, catering to the growing demands of high-field strength electric field measurements in smart power equipment and grid operations. Furthermore, this work represents a pioneering effort in developing a micro-ring electric field sensor using inverse design methodology and opens up new method for advanced sensing applications, paving the way for extensive utilization in future modern photonic integrated circuits.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tongrunye Yang, Yuhan Zhou Jr., Zhezheng Wang Jr., Yan Song, Bao Sun, and Yong Liu "Inverse-designed LNOI microring electric field sensor", Proc. SPIE 13502, AOPC 2024: AI in Optics and Photonics, 135020X (13 December 2024); https://doi.org/10.1117/12.3048138

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